A positioner for finding the center point of a cone position and a method of using the same

Abstract

The application discloses a positioner for searching a center point of a cone position and a use method thereof, and relates to the technical field of positioners, and comprises the following parts: a detector body, at least three metal detecting members are arranged in the detector body, the detector body is provided with a through hole, and the plurality of metal detecting members are arranged on the circumferential side of the through hole; the plurality of metal detecting members are arranged on the same circle and are distributed at equal intervals along the circumference of the circle, the central axis of the circle is coincident with the central axis of the through hole; each metal detecting member has a detection range, and the plurality of detection ranges are formed with an overlapping area, the overlapping area is opposite to the through hole, and the central axis of the overlapping area is coincident with the central axis of the through hole. The plurality of metal detecting members are used for detecting the cone on the other side of the baffle, the cone is detected in the overlapping area, the cone is opposite to the through hole, the accurate positioning of the cone is realized, a through hole can be directly drilled on the baffle, the threaded connection of the threaded steel bar and the cone on the steel reinforcement cage is facilitated, the cost is reduced, and the overall working efficiency is improved.

Description

Technical Field

[0001] This invention relates to the technical field of steel cage processing, and in particular to a positioning instrument for finding the center point of a cone and its usage method. Background Technology

[0002] Currently, when installing wooden baffles on the surface of steel cages, since the baffles themselves cannot accurately know the specific positions of each cone on the steel cage in advance, there is a method for locating the cones and threaded steel bars on the steel cage on site.

[0003] The existing technical methods are as follows: First, the construction workers will initially attach wooden baffles to the surface of the rebar cage. Since the cone is obscured by the baffles, its precise position cannot be directly determined. At this point, the operators will use the "trial hole method": randomly drilling multiple observation holes in the area corresponding to the pre-estimated cone on the baffles.

[0004] Subsequently, through multiple observation holes, construction workers observed from the outside of the baffle to determine the actual center position and angle of the cone located on the other side of the reinforcing cage. After determining its precise coordinates, a more accurate through hole corresponding to the internal threaded hole of the cone was drilled on the baffle, using that position as the center.

[0005] Finally, the threaded steel bar is inserted through the through hole from the outside of the baffle, and screwed into the internal thread of the steel cage cone.

[0006] The current method has the following drawbacks: drilling observation holes increases the drilling steps, reduces efficiency, and relies on human vision and experience to determine the position of the through hole. The positioning accuracy and efficiency depend to a large extent on the operator's proficiency. Experienced workers are required to do the work, which is costly and reduces the overall work efficiency. Summary of the Invention

[0007] In view of this, the purpose of the present invention is to provide a positioning instrument for finding the center point of a cone and its usage method. The instrument uses multiple metal detectors to detect the cone on the other side of the baffle. The cone is detected in the overlapping area so that the cone is aligned with the through hole, thus achieving accurate positioning of the cone. Through holes can be drilled directly on the baffle to facilitate the threaded connection between the threaded steel bar and the cone on the steel cage, thereby reducing costs and improving overall work efficiency.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A positioning device for finding the center point of a cone, comprising: a detector body, wherein at least three metal detector elements are disposed inside the detector body, the detector body has a through hole, and a plurality of the metal detector elements are disposed around the through hole; Multiple metal detectors are located on the same circle and are distributed at equal intervals along the circumference of the circle, with the central axis of the circle coinciding with the central axis of the through hole; Each of the metal detectors has a detection range, and an overlapping area is formed between multiple detection ranges. This overlapping area is directly opposite the through hole, and the central axis of the overlapping area coincides with the central axis of the through hole.

[0009] The aforementioned positioning device for finding the center point of a cone has a plane on its detector body, and the central axes of the plurality of metal detectors are perpendicular to this plane.

[0010] The aforementioned positioning device for finding the center point of a cone includes a control module inside the detector body, a display screen on the detector body, and multiple metal detectors and the display screen are respectively connected to the control module via signals.

[0011] The aforementioned positioning device for finding the center point of a cone includes an alarm module within the detector body, and the alarm module is signal-connected to the control module. The alarm module is capable of emitting at least one sound. When the alarm module can only emit one sound, it is the sound emitted by the alarm module when multiple metal detectors simultaneously detect the cone on the steel cage. When the alarm module can emit two sounds, the alarm module emits the first sound when one or two metal detectors detect the cone on the rebar cage, and the alarm module emits the second sound when three or more metal detectors simultaneously detect the cone on the rebar cage. The first sound is different from the second sound. When the alarm module can emit three sounds: when one metal detector detects the conical tube on the rebar cage, the alarm module emits the first sound; when two metal detectors detect the conical tube on the rebar cage, the alarm module emits the second sound; when three or more metal detectors simultaneously detect the conical tube on the rebar cage, the alarm module emits the third sound. The first sound, the second sound, and the third sound are all different.

[0012] The aforementioned positioning device for finding the center point of a cone includes an indicator light on the detector body, which is connected to the control system signal. The indicator light can display at least one color; When the indicator light can only display one color, it is the color displayed by the indicator light when multiple metal detectors simultaneously detect the cone on the steel cage. When the indicator light can display two colors, if one or two metal detectors detect the cone on the rebar cage, the indicator light displays the first color; if three or more metal detectors simultaneously detect the cone on the rebar cage, the indicator light displays the second color. The first color is different from the second color. When the indicator light can display three colors, the indicator light displays the first color when one metal detector detects the conical tube on the rebar cage, the second color when two metal detectors detect the conical tube on the rebar cage, and the third color when three or more metal detectors simultaneously detect the conical tube on the rebar cage. The first color, the second color, and the third color are all different.

[0013] The aforementioned positioning device for finding the center point of a cone includes a handheld part on the detector body. Both sides of the handpiece are wavy; The detector body is equipped with a hook.

[0014] The aforementioned positioning device for finding the center point of a cone includes a switch on the detector body and a power supply module inside the detector body. The power supply module and the switch are respectively connected to the control system signal.

[0015] The aforementioned positioning device for finding the center point of a cone includes a detector body comprising an upper cover and a bottom cover connected to each other, the upper cover and the bottom cover being fixed together by a plurality of screws; The bottom cover is provided with a plurality of first pillars, each of which has a threaded hole; the top cover is provided with a plurality of second pillars, each of which has an installation port; and the plurality of first pillars are respectively directly opposite the plurality of second pillars. The screw passes through the mounting opening and is fixedly connected to the threaded hole; The screw is concealed within the mounting opening.

[0016] A method of using a positioning device for finding the center point of a cone, comprising the aforementioned positioning device for finding the center point of a cone, the method comprising: Step S1: Select a starting point on any baffle on the steel cage, and place the plane of the detector body against the starting point of the baffle on the steel cage. Step S2: Move the detector body along the first direction on the baffle; Step S3: If one of the metal detectors senses the conical tube on the rebar cage, proceed to step S4; if no metal detector senses the conical tube on the rebar cage, return to step S1. Step S4: Continue moving the detector body along the first direction: Step S5: If two metal detectors simultaneously detect the spindle on the rebar cage, proceed to step S6; if only one metal detector detects the spindle on the rebar cage, proceed to step S8. Step S6: Continue moving the detector body along the second direction, which is perpendicular to the first direction; Step S7: Continue until all three metal detectors simultaneously sense the cone on the steel cage, then proceed to step S11; Step S8: After returning to the position where the metal detector senses the spinal canal, move the detector body along the second direction, which is perpendicular to the first direction; Step S9: Continue until two of the metal detectors simultaneously sense the cone on the steel cage, then proceed to step S10; Step S10: Continue moving the detector body along the first direction until all three metal detectors simultaneously sense the cone on the steel cage, then proceed to step S11; Step S11: The conical tube on the steel cage is directly opposite the through hole.

[0017] The above-mentioned method of using the positioning instrument for finding the center point of the cone includes step S12: marking the baffle according to the through hole, and drilling a baffle hole at the marked location so that the baffle hole is aligned with the internal thread hole of the cone tube on the steel cage; Step S13: Pass the threaded steel bar through the baffle hole and connect the threaded steel bar to the conical tube thread on the steel cage.

[0018] The present invention, by employing the above-mentioned technology, has the following positive effects compared with the prior art: This invention uses multiple metal detectors to detect the cone on the other side of the baffle. The cone is detected in the overlapping area so that the cone is aligned with the through hole, achieving precise positioning of the cone. Through holes can be drilled directly on the baffle, facilitating the threaded connection between the threaded steel bar and the cone on the steel cage, reducing costs and improving overall work efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the positioning instrument for finding the center point of a cone according to the present invention.

[0020] Figure 2 This is an exploded structural diagram of the positioning instrument for finding the center point of a cone according to the present invention.

[0021] Figure 3This is a side view of the overall structure of the positioning instrument for finding the center point of a cone according to the present invention.

[0022] Figure 4 This is a cross-sectional view of the overall structure of the positioning instrument for finding the center point of a cone according to the present invention.

[0023] Figure 5 This is a schematic diagram of the detection range of the positioning instrument of the present invention for finding the center point of a cone.

[0024] Figure 6 This is a schematic diagram of the structure of the positioning device of the present invention for finding the center point of a cone during its use in a steel cage and baffle.

[0025] Figure 7 This is a schematic diagram on the display screen of the positioning instrument for finding the center point of a cone according to the present invention.

[0026] In the attached diagram: 1. Detector body; 2. Metal detector; 3. Through hole; 4. Detection range; 5. Overlapping area; 6. Plane; 7. Control module; 8. Display screen; 9. Alarm module; 10. Indicator light; 11. Reinforcing cage; 12. Cone tube; 13. Handheld part; 14. Hook; 15. Switch; 16. Power supply module; 17. Top cover; 18. Bottom cover; 19. Baffle; 20. Movable pattern; 21. First column; 22. Second column; 23. Threaded hole; 24. Mounting port. Detailed Implementation

[0027] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "lateral", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this invention.

[0029] It should be noted that the terms "horizontal" and "vertical" in this invention are used to describe approximate positional relationships, and not strictly "horizontal plane" or "vertical plane".

[0030] It should be noted that, unless otherwise specified, the present invention may be used at the angle shown in the accompanying drawings or at an angle other than those shown in the drawings.

[0031] Please see Figures 1 to 7 As shown, a preferred embodiment of a positioning device for finding the center point of a cone is illustrated, comprising: a detector body 1, wherein at least three metal detectors 2 are provided inside the detector body 1, and the detector body 1 has a through hole 3, wherein a plurality of metal detectors 2 are disposed around the through hole 3.

[0032] Furthermore, as a preferred embodiment, multiple metal detectors 2 are located on the same circle and are distributed at equal intervals along the circumference of the circle, with the central axis of the circle coinciding with the central axis of the through hole 3.

[0033] Furthermore, as a preferred embodiment, each metal detector 2 has a detection range 4, and an overlapping region 5 is formed between multiple detection ranges 4. The overlapping region 5 is directly opposite to the through hole 3, and the central axis of the overlapping region 5 coincides with the central axis of the through hole 3.

[0034] Furthermore, as a preferred embodiment, the detector body 1 has a plane 6, and the central axes of the plurality of metal detector elements 2 are all perpendicular to the plane 6.

[0035] Preferably, the metal detector 2 can be one of electromagnetic induction type, X-ray detection type, microwave detection type, or other devices capable of metal detection.

[0036] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention.

[0037] In addition to the above, the present invention also has the following embodiments: In a further embodiment of the present invention, a control module 7 is provided inside the detector body 1, and a display screen 8 is provided on the detector body 1. Multiple metal detectors 2 and the display screen 8 are respectively connected to the control module 7 via signals.

[0038] In a further embodiment of the present invention, an alarm module 9 is provided inside the detector body 1, and the alarm module 9 is signal-connected to the control module 7; Alarm module 9 is capable of emitting at least one sound; When the alarm module 9 can only emit one sound, it means that multiple metal detectors 2 simultaneously detect the sound emitted by the cone alarm module 9 on the steel cage. When the alarm module 9 can emit two kinds of sounds, when one or two metal detectors 2 detect the spindle 12 on the steel cage 11, the alarm module 9 emits the first kind of sound; when three or more metal detectors 2 detect the spindle 12 on the steel cage 11 at the same time, the alarm module 9 emits the second kind of sound. The first kind of sound is different from the second kind of sound. When the alarm module 9 can emit three sounds, the alarm module 9 emits the first sound when one metal detector 2 detects the spindle 12 on the rebar cage 11, the alarm module 9 emits the second sound when two metal detectors 2 detect the spindle 12 on the rebar cage 11, and the alarm module 9 emits the third sound when three or more metal detectors 2 detect the spindle 12 on the rebar cage 11 simultaneously. The first, second and third sounds are all different.

[0039] In a further embodiment of the present invention, an indicator light 10 is provided on the detector body 1, and the indicator light 10 is signal-connected to the control system 7; Preferably, the indicator light 10 can be directly installed on the detector body 1, or it can be installed on the display screen 8. A certain area on the display screen 8 will display a color, and that area is the indicator light.

[0040] Indicator light 10 can display at least one color; When the indicator light 10 can only display one color, the indicator light 10 displays a color when multiple metal detectors 2 simultaneously detect the cone 12 on the steel cage 11. When the indicator light 10 can display two colors, one or two metal detectors 2 detect the spindle 12 on the rebar cage 11 and the indicator light 10 displays the first color. When three or more metal detectors 11 detect the spindle 12 on the rebar cage 11 at the same time, the indicator light 10 displays the second color. The first color is different from the second color. When the indicator light 10 can display three colors, if one metal detector 2 detects the conical tube 12 on the rebar cage 11, the indicator light 10 displays the first color; if two metal detectors 2 detect the conical tube 12 on the rebar cage 11, the indicator light 10 displays the second color; if three or more metal detectors 2 simultaneously detect the conical tube 12 on the rebar cage 11, the indicator light 10 displays the third color. The first, second, and third colors are all different.

[0041] In a further embodiment of the present invention, the detector body 1 has a handheld part 13; the handheld part 13 and the detector body 1 are an integral structure.

[0042] In a further embodiment of the present invention, both sides of the handheld portion 13 are wavy to improve friction.

[0043] Furthermore, the upper and lower sides of the handheld part 13 are provided with a grid pattern to improve friction.

[0044] In a further embodiment of the present invention, the detector body 1 is provided with a hook 14, which can be configured to hang a rope.

[0045] In a further embodiment of the present invention, a switch 15 is provided on the detector body 1, and a power supply module 16 is provided inside the detector body 1. The power supply module 16 and the switch 15 are respectively connected to the system signal for turning the entire device on or off. In addition, the power supply module 16 can be a battery or a rechargeable battery.

[0046] In a further embodiment of the present invention, the detector body 1 includes an upper cover 17 and a bottom cover 18 connected to each other, and the upper cover 17 and the bottom cover 18 are fixed by a plurality of screws.

[0047] In a further embodiment of the present invention, the bottom cover 18 is provided with a plurality of first pillars 21, each of which has a threaded hole 23, and the top cover is provided with a plurality of second pillars 22, each of which has an installation port 24, and the plurality of first pillars 21 are respectively opposite to the plurality of second pillars 22.

[0048] In a further embodiment of the present invention, the screw passes through the mounting opening 24 and is fixedly connected to the threaded hole.

[0049] In a further embodiment of the present invention, the screw is concealed within the mounting opening 24. This results in high connection strength, prevents detachment, and offers a superior structure compared to snap-fit ​​structures, while also being aesthetically pleasing.

[0050] The present invention also discloses a method for using a positioning device for finding the center point of a cone. The method of using the aforementioned positioning device for finding the center point of a cone includes: Step S1: Select a starting point on the baffle 19 on the steel cage 11, and place the plane of the detector body 1 against the starting point of the baffle 19 on the steel cage 11. Step S2: Move the detector body 1 along the first direction on the baffle 19; Step S3: If a metal detector 2 detects the spindle 12 on the rebar cage 11, proceed to step S4; if no metal detector 2 detects the spindle 12 on the rebar cage 11, return to step S1. Step S4: Continue moving the detector body 1 along the first direction: Step S5: If two metal detectors 2 simultaneously detect the spinal tube 12 on the rebar cage 11, proceed to step S6; if only one metal detector 2 detects the spinal tube 12 on the rebar cage 11, proceed to step S8. Step S6: Continue moving the detector body 1 along the second direction, which is perpendicular to the first direction; Step S7: Until all three metal detectors 2 simultaneously sense the spindle 12 on the steel cage 11, proceed to step S11; Step S8: After returning to the position where a metal detector 2 senses the spinal canal 12, move the detector body 1 along the second direction, which is perpendicular to the first direction; Step S9: Until two metal detectors 2 simultaneously sense the conical tube 12 on the steel cage 11, proceed to step S10; Step S10: Continue to move the detector body 1 along the first direction until the three metal detectors 1 simultaneously sense the spinal tube 12 on the steel cage 11, and execute step S11. Step S11: The conical tube 12 on the steel cage 11 is directly opposite the through hole 3; Step S12: Mark the baffle 19 according to the through hole 3, and drill a baffle hole at the marked location so that the baffle hole is aligned with the internal thread hole of the vertices 12 on the reinforcing cage 11; Step S13: Pass the threaded steel bar through the baffle hole and thread the threaded steel bar to the cone tube 12 on the steel cage 11.

[0051] Specifically, when the first metal detector 2 detects the cone 12, the indicator light 10 will emit a color and the alarm module 9 will emit an alarm sound. When two metal detectors 2 detect the cone 12, the indicator light 10 will emit a color and the alarm module 9 will emit an alarm sound. When three or more metal detectors 2 detect the cone 12 simultaneously, the indicator light 10 will emit a color and the alarm module 9 will emit an alarm sound.

[0052] The optimal choice is to have three different colors and three different sounds.

[0053] Furthermore, when the metal detector 2 detects the cone 12, the indicator light 10 continuously emits color, and the alarm module 9 continuously emits an alarm sound.

[0054] One embodiment is as follows: When the first metal detector 2 detects the cone 12, the indicator light 10 continuously emits the first color, and the alarm module 9 continuously emits the first sound. When the first metal detector 2 and the second metal detector 2 simultaneously detect the cone 12, the indicator light 10 continues to emit the first color, and the alarm module 9 continues to emit the first sound. When all three metal detectors 2 simultaneously detect the cone 12, the indicator light 10 continuously emits the second color, and the alarm module 9 continuously emits the second sound.

[0055] In addition, the metal detector 2 can detect the position of the cone 12. That is, when the metal detector 2 detects that the cone 12 is located to its right, the display screen 8 will display a right arrow. The operator can control the detector body to move to the right according to the right arrow. That is, when the metal detector 2 detects the cone 12, the display screen 8 can display the position of the cone 12 and give an active pattern 20 to bring the overlapping area closer to the cone. The active pattern 20 is an arrow.

[0056] Preferably, the display screen 8 shows three metal detector patterns at corresponding positions for easy observation by the operator.

[0057] When the first metal detector 2 detects the cone, the indicator light 10 continuously emits the first color, and the alarm module 9 continuously emits the first sound. The display screen 8 shows an active pattern 20 to bring the overlapping area 5 closer to the cone 12. The operator moves the detector body 1 according to the active pattern, so that the three metal detectors 2 can detect the cone 12 simultaneously at the fastest speed. At this time, the indicator light 10 continuously emits the second color, and the alarm module 9 continuously emits the second sound. The operator marks the baffle 19 by passing a marker through the through hole 3, drills a baffle hole in the baffle 19, passes the threaded steel bar through the baffle hole, and connects the threaded steel bar to the conical thread on the steel cage.

[0058] The method of the present invention further improves the overall work efficiency.

[0059] Furthermore, the diameter of the through hole 3 is consistent with the diameter of the internal thread hole of the cone 12, which improves the marking accuracy and the accuracy of the internal thread hole, the baffle hole, and the through hole after drilling on the baffle 19.

[0060] The above description is merely a preferred embodiment of the present invention and does not limit the implementation and protection scope of the present invention. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A positioning instrument for finding the center point of a cone, characterized in that, include: The detector body has at least three metal detection elements inside, and the detector body has a through hole, with multiple metal detection elements disposed around the through hole. Multiple metal detectors are located on the same circle and are distributed at equal intervals along the circumference of the circle, with the central axis of the circle coinciding with the central axis of the through hole; Each of the metal detectors has a detection range, and an overlapping area is formed between multiple detection ranges. This overlapping area is directly opposite the through hole, and the central axis of the overlapping area coincides with the central axis of the through hole.

2. The positioning instrument for finding the center point of a cone according to claim 1, characterized in that, The detector body has a plane, and the central axes of the plurality of metal detectors are perpendicular to this plane.

3. The positioning instrument for finding the center point of a cone according to claim 2, characterized in that, The detector body is equipped with a control module and a display screen. The multiple metal detectors and the display screen are respectively connected to the control module via signals.

4. The positioning device for finding the center point of a cone according to claim 3, characterized in that, The detector body is equipped with an alarm module, which is signal-connected to the control module. The alarm module is capable of emitting at least one sound. When the alarm module can only emit one sound, it is the sound emitted by the alarm module when multiple metal detectors simultaneously detect the cone on the steel cage. When the alarm module can emit two sounds, the alarm module emits the first sound when one or two metal detectors detect the cone on the rebar cage, and the alarm module emits the second sound when three or more metal detectors simultaneously detect the cone on the rebar cage. The first sound is different from the second sound. When the alarm module can emit three sounds: when one metal detector detects the conical tube on the rebar cage, the alarm module emits the first sound; when two metal detectors detect the conical tube on the rebar cage, the alarm module emits the second sound; when three or more metal detectors simultaneously detect the conical tube on the rebar cage, the alarm module emits the third sound. The first sound, the second sound, and the third sound are all different.

5. The positioning instrument for finding the center point of a cone according to claim 3, characterized in that, The detector body is equipped with an indicator light, which is connected to the control system signal. The indicator light can display at least one color; When the indicator light can only display one color, it is the color displayed by the indicator light when multiple metal detectors simultaneously detect the cone on the steel cage. When the indicator light can display two colors, if one or two metal detectors detect the cone on the rebar cage, the indicator light displays the first color; if three or more metal detectors simultaneously detect the cone on the rebar cage, the indicator light displays the second color. The first color is different from the second color. When the indicator light can display three colors, if one metal detector detects a conical tube on the rebar cage, the indicator light displays the first color; if two metal detectors detect a conical tube on the rebar cage, the indicator light displays the second color; and if three or more metal detectors simultaneously detect a conical tube on the rebar cage, the indicator light displays the third color. The first color, the second color, and the third color are all different.

6. The positioning device for finding the center point of a cone according to claim 2, characterized in that, The detector body has a handheld part; Both sides of the handpiece are wavy; The detector body is equipped with a hook.

7. The positioning instrument for finding the center point of a cone according to claim 3, characterized in that, The detector body is equipped with a switch, and the detector body is equipped with a power supply module. The power supply module and the switch are respectively connected to the control system signals.

8. The positioning instrument for finding the center point of a cone according to claim 2, characterized in that, The detector body includes an upper cover and a bottom cover that are connected to each other, and the upper cover and the bottom cover are fixed together by a plurality of screws; The bottom cover is provided with a plurality of first pillars, each of which has a threaded hole; the top cover is provided with a plurality of second pillars, each of which has an installation port; and the plurality of first pillars are respectively directly opposite the plurality of second pillars. The screw passes through the mounting opening and is fixedly connected to the threaded hole; The screw is concealed within the mounting opening.

9. A method of using a positioning instrument for finding the center point of a cone, characterized in that, The method of using the positioning instrument for finding the center point of a cone according to any one of claims 2-8 includes: Step S1: Select a starting point on any baffle on the steel cage and place the plane of the detector body against the starting point of the baffle on the steel cage. Step S2: Move the detector body along the first direction on the baffle; Step S3: If one of the metal detectors senses the conical tube on the rebar cage, proceed to step S4; if no metal detector senses the conical tube on the rebar cage, return to step S1. Step S4: Continue moving the detector body along the first direction: Step S5: If two metal detectors simultaneously detect the spindle on the rebar cage, proceed to step S6; if only one metal detector detects the spindle on the rebar cage, proceed to step S8. Step S6: Continue moving the detector body along the second direction, which is perpendicular to the first direction; Step S7: Until all three metal detectors simultaneously sense the cone on the steel cage, proceed to step S11; Step S8: After returning to the position where the metal detector senses the spinal canal, move the detector body along the second direction, which is perpendicular to the first direction; Step S9: Continue until two of the metal detectors simultaneously sense the cone on the steel cage, then proceed to step S10; Step S10: Continue moving the detector body along the first direction until all three metal detectors simultaneously sense the cone on the steel cage, then proceed to step S11; Step S11: The conical tube on the steel cage is directly opposite the through hole.

10. The method of using the positioning instrument for finding the center point of a cone according to claim 9, characterized in that, Step S12: Mark the baffle plate according to the through hole, and drill a baffle hole at the marked location so that the baffle hole is aligned with the internal thread hole of the cone tube on the steel cage; Step S13: Pass the threaded steel bar through the baffle hole and connect the threaded steel bar to the conical thread on the steel cage.

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